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5-4
Siemens Energy & Automation
SIMOREG DC Master Base Drive Panel Operating Instructions
Notes:
1) Operation with reduced input voltage will result in reduced maximum output voltage accordingly.
2) Values apply for rated DC output current on both the armature and field circuits.
3) The specified output DC voltage can be guaranteed up to an undervoltage of 5% of rated line voltage.
4) The table below gives load values, (DC current), as a function of ambient temperature surrounding the
Base Drive Panel, (refer to P077).
Note, Important:
When Base Drive Panels are installed into
enclosures, make sure the temperature inside does not exceed 45
o
C, otherwise derate the DC current
rating per the table below.
Ambient temperature % reduction in base drive dc ampere rating
Self-cooled converters Fan-cooled converters
(15, 30, 60, 100 ADC) (140 - 1660 ADC)
+40
º
C
+45
º
C
+50
º
C
+55
º
C
+60
º
C
– 0 %
– 0 %
– 6 %
– 11 %
– 18 %
– 0 %
– 0 %
– 5 % a)
– 5 % a)
– 5 % a)
a) Operation of fan cooled units at ambients above 50
o
C is not permitted
because of limitations on the allowable fan operating temperature.
5) Load values, (DC current), as a function of installation altitude (refer to P077)
0
20
40
60
80
100
%
Installation altitude
1000 2000 3000 4000 5000 m
Percentage
load "b"
67%
b1
Curve b1: Reduction factor of load values, (DC current),
at installation altitudes above 1000 m.
No derating of the supply voltages to any circuits is required
up to an installation altitude of 5000 m for basic insulation.